Portion of a shoe outsole



FIG. 1 is a bottom rear perspective view of a portion of a shoe outsole showing my new design;

FIG. 2 is a bottom front perspective view thereof; and,

FIG. 3 is a bottom plan view thereof.

The uneven broken lines immediately adjacent to the shaded area represent an unclaimed boundary of the design. The uneven broken line showing of the shoe upper and the remainder of the shoe sole is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a portion of a shoe outsole, as shown and described. 